Zoiper is running.
Agc is off, the input volume level is set to 7.
Close the zoiper.
Launch zoiper input_volume again set to 58.
Close the zooer.
In the configuration file, set <input_volume> 7 </ input_volume>.
We open the zooiper.
Make a call or immediately close and <input_volume> 58 </ input_volume> again.
How to keep the level?
